Cribb, Robert Bridson
Longman, 1995
Buku Teks
Ricklefs, Merle Calvin, 1943-
Serambi Ilmu Semesta, 2007
Buku Teks
Ricklefs, Merle Calvin, 1943-
Serambi Ilmu Semesta, 2005
Buku Teks
Palmer, Robert Roswell, 1909-2002
McGraw-Hill, 1992
Buku Teks
Grattan, C. Hartley
The University of Michigan Press, 1963
Buku Teks